Puas yog daim duab peb sab sib npaug?
Puas yog daim duab peb sab sib npaug?

Video: Puas yog daim duab peb sab sib npaug?

Video: Puas yog daim duab peb sab sib npaug?
Video: Yog Ntuj Pub Wb Rov Ntsib by Luj Yaj 2024, Hlis ntuj nqeg
Anonim

A parallelogram yog plaub-tog, ob-seem duab nyob rau hauv uas ob sab sib npaug yog sib npaug thiab muaj qhov ntev sib npaug. A daim duab peb sab yog ob hom duab uas muaj peb sab thiab peb lub kaum. Mus nrhiav thaj tsam ntawm a daim duab peb sab , peb coj ib nrab ntawm nws lub hauv paus sib npaug los ntawm nws qhov siab.

Yog li ntawd, daim duab peb sab yog parallelogram muaj los yog tsis?

Lub opposite los yog tig sab ntawm a parallelogram yog qhov sib npaug ntawm qhov ntev thiab cov kaum sab nraud ntawm a parallelogram yog qhov ntsuas sib npaug.

Parallelogram
Qhov no parallelogram yog lub rhomboid vim nws tsis muaj lub kaum sab xis thiab sab tsis sib xws.
Hom quadrilateral
Ntug thiab taw qhia 4
Symmetry pawg C2, [2]+, (22)

Qhov thib ob, cov duab twg yog cov duab sib npaug? Parallelograms yog cov duab uas muaj plaub ob sab nrog ob khub ntawm ob sab uas zoo ib yam. Cov plaub cov duab uas ua tau raws li qhov xav tau ntawm daim duab plaub sib dhos yog square , duab plaub , rhombus , thiab rhomboid.

Ib yam li ntawd, koj yuav nug, pes tsawg daim duab peb sab nyob hauv daim duab plaub?

Diagonals ntawm a parallelogram sib cais. Txhua kab pheeb ces kaum ntawm a parallelogram cais nws mus rau hauv ob congruent peb tog.

Dab tsi yog qhov piv txwv ntawm daim duab peb sab thiab daim duab plaub uas muaj thaj tsam ib yam?

1. Yog hais tias daim duab peb sab thiab parallelogram nyob rau tib yam puag thiab muaj tib yam qhov siab , thaj tsam ntawm daim duab peb sab yuav yog ib nrab ntawm cov duab sib dhos Yog lawv muaj tib yam qhov siab , lawv yuav nyob nruab nrab ntawm tib qho kev sib piv. Yog li thaj tsam ntawm daim duab peb sab yuav sib npaug ib nrab ntawm cov duab sib dhos

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